Caterpillar original  10R-1280 Common Rail Diesel Fuel Injector 3508B 3512B 3516B 3508 3512 3516 Replacement for OEM 10R8795 250-1308 245-8272 original new injector

The Caterpillar 3512B fuel injector, main OE number 10R-1280, is a precision-engineered diesel fuel injection assembly designed to deliver accurate fuel metering and superior atomization across the entire CAT 3500 engine series. Manufactured from hardened steel alloys, this injector provides exceptional durability, corrosion resistance, and high-temperature tolerance for continuous operation in demanding industrial environments such as marine propulsion, mining operations, oilfield applications, and stationary power plants.

This injector is fully compatible with CAT 3512B, 3512C, 3516B, 3516C, 3508, and 3520 engines, offering OEM fitment and reliable performance. It serves as a direct replacement for multiple cross reference numbers including 10R1280, 20R1272, 2501308, 1521887, 1628810, 2290195, 3861760, 3920208, OR7780, 20R2296, 10R1279, 20R1265, 20R1266, 3920214, 3760509, and 10R2827. The component is suitable for diesel generator sets, heavy construction machinery, offshore platforms, and other heavy-duty power generation equipment.

Proper installation requires cleaning the injector bore, replacing sealing rings, lubricating O-rings, tightening to the specified torque, bleeding the fuel system, performing a leak test, and verifying spray performance. Routine maintenance should include the use of clean diesel fuel, regular replacement of fuel filters, prevention of water contamination, monitoring of fuel pressure, periodic bench testing of injectors, and inspection of fuel return flow. For troubleshooting, recommended services include injector testing, flow calibration, nozzle replacement, seal replacement, fuel system flushing, and full injector replacement when necessary.